Results 101 to 110 of about 149,961 (158)
The relation between preference and demand for litter substrates in the domestic hen [PDF]
, 2006 Six hen's preferences between 5-min access to each of two litter substrates, sand and sawdust, were measured using dependent concurrent VI 60 s VI 60 s schedules of reinforcement. The obtained preferences were small and idiosyncratic.
Harris, Aimee Rebecca
core
Potential of LCA for designing technological innovations – the case of organic eggs [PDF]
, 2009 Ecological sustainability in agriculture is a concept that contains various environmental problems, which are caused by emission of pollutants and unsustainable use of limited resources, during different processes along the food chain.
de Boer, I.J.M. +4 more
core
Behaviour of laying hens and relationships with microclimatic conditions in a multi-tiers system [PDF]
openLa tesi analizza l'impatto delle condizioni ambientali sul comportamento di galline ovaiole allevate in un sistema cage-free ad aviario multi-livello. In un contesto in cui i sistemi alternativi alle gabbie stanno acquisendo sempre più rilevanza per
ZORZI, GIULIA
core
, 2011 Availability of phytate phosphorus (P) was determined in ISA Brown hens 21 and 47 weeks old, fed a wheat-maize-soyabean diet, without a phytase supplement. The diet contained total and phytate P at 4.99 and 1.58 g/kg, respectively.
Skřivan, Miloš +3 more
core +1 more source
The aim of the project ‘The genetics of robustness in laying hens’ was to investigate nature and regulation of robustness in laying hens under sub-optimal conditions and the possibility to increase robustness by using animal breeding without loss of production.
openaire +1 more source
The Distributional Implications for Higher Farm Animal Welfare in New Zealand [PDF]
Over the past few decades the relative price of eggs has fallen dramatically in New Zealand. This has been made possible, at least in part, by the application of increasingly intensive agricultural practices.
Bicknell, Kathryn
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Effect of compound plant essential oils on production performance and egg quality of laying hens
Siliao yanjiuThe experiment was conducted to study the effect of compound plant essential oils on the production performance and egg quality of laying hens. A total of 13 664 Dawu Jinfeng laying hens with similar body weight and late laying period (362~368 days of ...
LI Wei +7 more
doaj
Siliao yanjiuEggshell quality is an important indicator in laying hens breeding, which directly affects the market value of products and the production efficiency of breeding enterprises.
WU Shujun +3 more
doaj